242 



INDEX OF GENERA AND SPECIES. 



Eetzia compressa, 14. 

 Eingicula, 112. 



Eingicula varia, 112. 



EoSTELLARIA, 123. 



Eostcllaria canalifera, 123. 

 simplex, 124. 

 Ehynchonella, Carb., 12; Trias. 



34; Jur., 39. 

 Ehynchonella sequiplicata, 35. 

 gnathophora, 39. 

 lingulata, 34. 

 Ehyncopteris, 31. 



Ehyncopteris obesus, 32. 



Scalaria, 212. 



Scalaria Mathewsonii, 212. 

 SErTIFER, 186. 



Septifer dichotomus, 186. 

 Siliqua, 147. 



Siliqua Oregonensis, 147. 

 Solen, 146, 213. 



Solen Diegoensis, 213. 

 parallelus, 146. 

 Spirifer, Carb., 13; Trias., 35. 



Spirifer Homfrayi, 35. 

 lineatus, 13. 

 Spiriferina, 14. 

 Strap arollus, 120. 



Straparolius lens, 120. 



paucivolvus, 120. 



Tapes, 169, 214. 



Tapes Conradiana, 169. 

 ? cretacca, 214. 

 qnadrata, 169. 

 Tp:llina, 155. 



Tellina Ashburnerii, 159. 

 Californica, 161. 

 decurtata, 158. 

 Hoffmanniana, 156. 

 Hornii, 160. 

 longa, 155. 



Tellina Mathewsonii, 158. 

 monilifera, 157. 

 ooides, 157. 

 parilis, 160. 

 ? quadrata, 159. 

 Eemondii, 156. 

 Whitneyi, 160. 

 Terebratella, 205. 



Terebratella obesa, 205. 

 Terebratula, Trias., 34; Jur., 41. 

 Terebratula Humboldtensis, 

 34. 

 Tessarolax, 126. 



Tessarolax distorta, 126. 

 Trapezium, 170. 



Trapezium carinatum, 170. 

 Trigonia, Jur., 48; Cret., 188. 

 Trigonia Evansii, 189. 



Gibboniana, 190. 

 pandicosta, 48. 

 Tryoniana, 188. 

 Tritonium, 94. 



Tritonium Diegoensis, 95. 

 Hornii, 94. 

 paucivaricatum, 95. 

 Whitneyi, 66. 

 Trochosmilia, 207. 



Trochosmilia striata, 207. 

 Turnus, 145. 



Turnus plenus, 146. 

 Turrilites, 73. 

 Turris, 92. 



Turris Claytonensis, 92. 

 varicostata, 93. 



TURRITELLA, 131, 212. 



Turritella Chicoensis, 133. 



infragranulata, 21 2. 

 infralineata, 131. 

 robusta, 135. 

 Saffordii, 135. 

 seriatim-granulata, 



132. 

 Uvasana, 134. 

 Veatchii, 133. 



